Revision 551621

MFH: r551526

Update to 0.6.22

- Update MASTER_SITES
- Use USES=localbase
- Strip shared library
- Convert to options target helper
- Update WWW
- Take maintainership

Changes:	https://github.com/libexif/libexif/releases
PR:		250105
Submitted by:	sunpoet (myself)
Approved by:	dbaio (maintainer)
Security:	cff0b2e2-0716-11eb-9e5d-08002728f74c

Approved by:	ports-secteam (joneum)